The Miami Marlins are "aggressively" seeking a replacement for manager Ozzie Guillen, reports Buster Olney of ESPN:

Marlins are aggressively seeking a replacement for Ozzie Guillen. Will they wait to find someone before firing him? We'll see.

— Buster Olney (@Buster_ESPN) October 4, 2012

Olney notes that it remains to be determined if the Marlins will fire Guillen before having his successor in place. What does now seem to be clear is that Guillen’s tenure in Miami will be over after only one season.

Guillen was acquired from the Chicago White Sox prior to the 2012 season. The Marlins hoped the manager would appeal to the team’s Latin American fan base, but he quickly angered this portion of followers, along with many others, with his comments regarding Cuban leader Fidel Castro.

With the team’s new stadium and its significant offseason spending, expectations were sky-high to start the year. After a slow start, the Marlins rebounded to finish the month of May with a record of 29-22. Miami proceeded to tank in June, losing six straight games twice over a stretch where they went 3-17. They finished the season with a record of 69-93.